Transmission lock



G. A. GILL-EN TRANSMISSION LOCK Dec; 15, l925-- 11565559 Original Filed Jan. 25, 1922 2 Sheets-Sheet l A 5140mm 6' or e 6i len G. A. GILLEN TRANSMISSION LOCK OrizinalFiledJan. 25, 1922 2 Sheets-Sheet 2 lNl/E/VTOR (Zeorgye A. Gillan AUG NH Patented Dec. 15, 1925.

UNIT ED GEORGE A. mum-0F JEitSEY 1oi'rY,;-1\ir:w iniis'nii, lis'sierioiz To GILLEN LABORA:

TORIES conronn'mon.

'rnnfsiarssion Loci z.

Application filed January '25, 1522; seriaiiiafiaitz. Renewed April 25,1925.

To (ZZZ whom it may concern:

Be it known that I, GEORGE A. GILLEN,'& citizen of the United States, residing at Jersey City, in the county of Hudson and "State of New Jersey, have invented new and useful Improvements in j Transmission Locks, of which the following is a specification. V f

.This invention'relates to improvements in locking devices, and more particularlyao transmission locks which are a'da'pted to "be applied to motor vehicles to prevent theft. Another object of the invention" residesin the provision of'alocking mechanism which is designed to be applied to the transmission of the vehicle, and more particularly to that type'of tra'nsmisslon known as" the planetary type.

Stillanother ,object of the invention is to provide a device which tightens'both the forward and reverse bands on their respective drums, thereby preventing an unauthorized person from rotating the rear wheelS,-,it being common practice for motor thievestosupport the forwardend ofva car on a rolling jack in order to convey the vehicle to a place of securitywhere' the looking' mechanism may be manipulated or broken, and the car released. Y

A further'ob'ect of the invention is'lto provide a'device whichmay beappliedto cars in present use, without changing the parts or otherwise interfering with "the mechanism.

lVith these and other objectsin view the invention consists inthenovel construction,

combination and arrangement of vparts which will be fully. set forthin the'following specification, claimed and illustrated in the accompanying drawing, in" which,

Figure 2 1s a fragmentaryperspective" vlew of the forward "and "reverse transmls sionj'ban'ds, illustrating my improved lockingdevice in detail, t

' .YReferiing to" the "drawings 12 in its upper side.

with'the tflrfansiiii'ssion'bands and cooperating meehanism; said bands being in their e'xpa'nded cotiditiini and the lock unlocked,

*FigureM: is' a' view" similar to Figure 3,

showing the locking device in operation and thebandscontraetedfand,

1 "Eigure5'is'*a fragmentary'sectional view taken on' line 5-5 ofFigure 4." w 1 v in detail, the numeral-=10 designates a motor provided --with"fthe fcustoi'n'ary transmission housing,

l1,-wl1'-ich is formed with. the usual opening This opening 12 is closed by a" 'suitablecover' plate 13, which is formed with an opening 14, the'use of which will appear as] the description proceeds. The openin 14, is'located directly above the center 0% the space between the forward 'and'reversetransmissionbands 15 and 16 res'peetivel'y, in order to admitthe-locking "plunger, to scribed, to the transmission "housing. transmission bands are provided near their adjacent ends' with castings, 17 which are be hereinafter more'fully de- The formed"with upstanding forked members, l"8,'between the tines of which extend the band adjusting screws, 19.

In "orderto normally 'hold'thebands expanded," compression coil "springs, 20, are arranged around the screws,"19, and their en dsa're arrangedto abut the tinesof the forked members, 18, as clearly shown in iel i s 9 1 1 Se'cured'tfothe'cover plate'13, and extend- -ing 1vertieally "therefrom is a casing," 2.1,

which is'provided with a rectangular opening throu gh which thelocking plunger, 22, slides. This. plunger "extends slightly beyond' the opening in the casing, and has secured thereto a knob'23, and the lower Figure 1 is a fragmentary side/view a"' en do'f the plunger isprovidedwith a depending ear 24, to which the endsof the ,li'nks, 2 5, are pivotally' connected. The op- "p'o 'sit'e endsfof thesedinksfarepivoted to ears, 26', formed on theequalizingf bars fl,

' wise-11 areeifgagedbehind' the j forked-he hers 1s, win be twang s es ri en reference 'to ithdi-awi maap ns'es', ex-

tend at-fright angle from it 'e "equ'aliz ing members 18, beneath the adjusting screws 19, previously described. It will thus be seen that as the plunger 22, is moved upwardly, the links 25, will swing on their pivots, tending to draw their lower ends closer together, thereby causing the equalizing bars 27, to move toward each other and tighten the bands around their respective drums.

In order to hold the device in look position, the plunger, 22, is provided in one face with a plurality of notches 29, which are adapted to receive the end of a locking bolt 30, mounted in a cylidrical housing, 31, which is formed integrally with and extends laterally from the casing, 21. As illustrated,

,the bolt 30, is nominally urged into engagement with the notched face of the plunger 22, by means of a compression coil spring 32, and in order to prevent an unauthorized person from withdrawing the bolt, I provide said bolt with an opening 33, which when the bolt, is in projected position, registers with openings 34, formed in the easing 31. It will thus be seen that when the bolt is in projected position, a pin 35, may be inserted through the openings, and the hasp 36, of a padlock 37, may be passed through the aperture 38, formed near one end of the pin. In this way it will be evident that when the pin 35, is inserted as directed, and thepadlock 37 locked with its hasp 36, extending through the opening 38, the bolt 30, cannot be withdrawn from its engagement in the notches 39, thereby pre venting the loosening of the bands 15 and 16, on their respective drums. Obviously, when both the bands are tightened, the car will be locked so as to prevent either forward or rearward movement, and any at tempt at theft will be frustrated.

In order to unlock the device, the padlock 37 is unlocked in the customary manner and its hasp 36 removed from its position in the opening 38 of the pin 35. The pin isv then withdrawn from its position in the bolt 30, thus permitting it to be movedinwardly against the spring 32 so as to free the plunger 22 and permit it to move downwardly so as to allow for the expansion of the bars 27 and bands 15 and 16 under the influence of the springs 20. Thus it will be seen that the drums will be free to rotate within their respective bands in the ordinary manner and the car operated without difiiculty.

While in the foregoing there has been shown and described the preferred embodiment of this invention, it is to be understood that certain minor changes, in the details of construction, combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as claimed.

I claim 1. The combination with a planetary transmission having forward and reverse bands, of a locking means associated with said transmission for tightening both the forward and reverse bands simultaneously.

2. The combination with a planetary transmission having forward and reverse bands, of a locking means associated with the bands to contract the same on their respective drums, said locking means being equalized so that the degree of tightness of both bands will be uniform.

3. The combination with a planetary transmission having forward and reverse bands, of a plunger, band contracting means connected to the plunger and adapted to tighten the bands on their respective drums when the plunger is moved upwardly.

4E. The combination with a planetary transmission having forward and reverse bands, of a plunger, and equalizing band contracting means connected to the plunger and associated with the bands in such a manner that when the plunger is moved upwardly the bands will be contracted on their respective drums.

5. The combination with a planetary transmission, having forward and reverse bands, of equalizing bars, and means associated with the equalizing bars for moving the same toward each other and contracting the bands on their respective drums.

6. The combination with a planetary transmission having forward and reverse bands of equalizing bars associated with the hands, a plunger and means connecting the plunger with the bars to move the same toward each other and to tighten said drums on their respective bands.

7. The combination, with a planetary transmission having forward and reverse bands, of equalizing bars associated with the bands, a vertically movable plunger, links connecting the plunger with the equalizing bars, whereby, when the plunger is moved upwardly the bands will be contracted on their respective drums, and means for locking the plunger in elevated position.

8. The combination with a planetary transmission having forward and reverse bands, of equalizing bars associated with the bands, a vertically movable plunger, links connecting the equalizing bars with the plunger whereby when the plunger is moved upwardly the bands will be contracted on their respective drums, means to hold the plunger in elevated position and guide pins carried by the bars.

9. The combination with a planetary transmission having forward and reverse bands, of a vertically movable plunger means to lock the plunger in an elevated position, links connected to the plunger, equalizing bars at the opposite ends of the links plunger in elevated position and means at and associated with the bands so that when the lower end of the plunger for contracting 10 the plunger is moved upwardly the bands the forward and reverse bands of a planewill be contracted on their respective drums, tary transmission on their respective drums.

' and guide pins on the bars for holding the Signed at New York in the county of bars in proper relation to the bands. New York and State of New York this 20th 10. A transmissionlock comprising a verday of January, 1922. tically movable plunger, means to lock the GEORGE A. GILLEN. 

